CN111143639A - User intimacy calculation method, device, equipment and medium - Google Patents
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Abstract
The invention discloses a user intimacy method, relates to the technical field of data analysis, and is used for solving the problem that the existing method for analyzing the user behavior similarity of discontinuous and sparse user geographical position track data is lacked, wherein the method comprises the following steps: receiving user geographic location data; clustering geographical position data to be analyzed through a preset clustering algorithm to obtain a first clustering cluster; forming a relationship pair by the users in each first aggregation cluster through a Cn combination function; clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering; calculating derivative features according to the relationship pairs and the second clustering; and calculating a user affinity score according to the derived features. The invention also discloses a user intimacy calculation device, electronic equipment and a computer storage medium. The invention provides a user intimacy degree calculation method, which is used for obtaining user behavior similarity.
Description
Technical Field
The invention relates to the technical field of data analysis, in particular to a user intimacy degree calculation method, device, equipment and medium.
Background
LBS location service (location based service) is to use various types of location technology to obtain the current location of the location equipment, and provide information resources and basic service for the location equipment through the mobile internet; comprehensive user geographical location track information can be obtained through the LBS location service.
By collecting the track information of the geographic positions of the users, the intimacy between different users can be calculated; the user intimacy can reflect the interests and habits of the users, and potential spatiotemporal relevance among the users can be mined.
At present, some user intimacy degree analysis methods exist, the time dimensionality cannot be analyzed generally, or the time calculation dimensionality is short, the user intimacy degree in one day is only calculated generally, and in many cases, due to the fact that user geographic position track data is discontinuous and sparse, the short time calculation dimensionality is difficult to accurately calculate the accurate user behavior similarity.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a user intimacy degree calculation method, which can complete user intimacy degree calculation on a large amount of data, and further increase the accuracy of user behavior similarity degree calculation by increasing the time span for acquiring data.
One of the purposes of the invention is realized by adopting the following technical scheme:
a user intimacy calculation method comprises the following steps:
receiving user geographical position data in a preset time period, and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster;
forming a relationship pair by the users in each first aggregation cluster through a Cn combination function;
clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
calculating derivative features according to the relationship pairs and the second clustering;
and calculating a user affinity score according to the derived features.
Further, the user geographical location data is location data of an LBS location service.
Further, the method for preprocessing the user geographic position data comprises the following steps:
carrying out format verification on the user geographic position data, and deleting data which does not meet the format requirement;
carrying out numerical value verification on the user geographic position data, and deleting data which do not conform to a preset numerical value interval;
and analyzing the longitude and latitude of the verified user geographical position data to obtain region information corresponding to each longitude and latitude, wherein the region information comprises city and province information.
Further, the preset clustering algorithm is a DBSCAN clustering algorithm, and the preset clustering algorithm performs weight adjustment through a preset parameter tuning algorithm.
Further, forming a relationship pair by the users in each of the first aggregation clusters through a Cn combination function, including the following steps:
sequencing the users in each first aggregation cluster according to a characteristic value, wherein the characteristic value comprises one of a mobile phone number, an identity card number and a user ID;
and splitting all the users into pairwise relation pairs through a Cn combination function.
Further, the derived features comprise geographical proximity strength and geographical proximity stability, and the user intimacy degree calculation method satisfies the following formula: (coefficient x location proximity strength + (1-coefficient) x location proximity stability) x user weight, the coefficient being an adjustment coefficient, the user weight being calculated as: lg (Nmax/N (a)), Nmax is the maximum number of users adjacent to the geographical position, N (a) is the number of users adjacent to the geographical position a, and a is one of the users.
Further, calculating a user affinity score according to the derived features, comprising the steps of:
and when the user intimacy degree score exceeds a preset threshold value, taking the preset threshold value as the user intimacy degree score.
Another object of the present invention is to provide a user intimacy degree calculation apparatus, which can complete user intimacy degree calculation for a large amount of data, and further increase the accuracy of user behavior similarity degree calculation by increasing the time span for acquiring data.
The second purpose of the invention is realized by adopting the following technical scheme:
a user affinity computing device, comprising:
the receiving module is used for receiving the user geographical position data in a preset time period and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
the clustering module is used for clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster; forming a relationship pair by the users in each first aggregation cluster through a Cn combination function; clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
a feature calculation module for calculating derived features according to the relationship pairs and the second clusters;
and the intimacy degree calculating module is used for calculating the intimacy degree score of the user according to the derived characteristics.
It is a further object of the present invention to provide an electronic device for performing one of the above objects, comprising a processor, a storage medium, and a computer program, the computer program being stored in the storage medium, the computer program, when executed by the processor, implementing the method for calculating user intimacy.
It is a fourth object of the present invention to provide a computer-readable storage medium storing one of the objects of the invention, having a computer program stored thereon, which when executed by a processor, implements the user intimacy degree calculation method described above.
Compared with the prior art, the invention has the beneficial effects that:
the method can adjust the time dimension of the analysis data according to the requirement, solves the problem of inaccuracy of user behavior similarity, namely the calculation result of the user intimacy degree, caused by data discontinuity, can still realize the calculation of the user intimacy degree under the condition of large data volume, and cannot be limited by the data volume; the user intimacy degree calculation method provided by the invention can be used for rapidly analyzing the character relationship in real life.
Drawings
FIG. 1 is a flowchart of a user affinity calculation method according to the first embodiment;
FIG. 2 is a flowchart of a geographical location data preprocessing method according to a first embodiment;
fig. 3 is a block diagram showing the structure of the user intimacy degree calculation apparatus according to the second embodiment;
fig. 4 is a block diagram of the electronic apparatus of the third embodiment.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, in which the description of the invention is given by way of illustration and not of limitation. The various embodiments may be combined with each other to form other embodiments not shown in the following description.
Example one
The embodiment I provides a user intimacy method, which aims to cluster geographical position data, analyze characteristic information through a clustering result and further calculate user intimacy through the characteristic information.
Referring to fig. 1, a method for calculating user intimacy includes the following steps:
s110, receiving user geographical position data in a preset time period, and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
the preset time period in S110 may be set according to actual conditions, for example, one year, that is, the geographic location data of the user within one year is analyzed, and the preset time period may be increased for data with low continuity or sparse data, so as to obtain more comprehensive analysis data and obtain an accurate user intimacy score.
Foretell user geographical position data source is the location data of user equipment's LBS position service, for example, God navigation, operator communication or APP location service etc. generally is longitude and latitude numerical value information, compares in prior art user geographical position data often for the user data of registering, and the user just can record positional information for registering on APP promptly, and LBS position service's location data is more comprehensive, and the user opens relevant APP and just can acquire user's positional information usually.
The data preprocessing in S110 refers to performing format inspection, abnormal value processing, and the like on the geographical location data, and analyzing the longitude and latitude of the home province and city. Referring to fig. 2, the method specifically includes the following steps:
s1101, carrying out format verification on the user geographic position data, and deleting data which do not meet the format requirement;
it should be noted that, when multiple latitude and longitude data, such as base station cells, gps, and wifi, coexist, the value taking method is to take the first data that is not empty, and the priority order is adjusted according to the actual situation, where the priority refers to the priority of the base station cells, gps, and wifi.
S1102, carrying out numerical value verification on the user geographic position data, and deleting data which do not conform to a preset numerical value interval;
the preset values in S1102 are latitude and longitude ranges, for example, latitude and longitude ranges of [ -180,180], and dimension ranges of [ -90,90], and the accuracy is accurate to 6 bits after the decimal, and the data exceeding the latitude and longitude range may affect the subsequent intimacy degree calculation, and is considered as abnormal data, and the data is deleted.
S1103, performing longitude and latitude analysis on the verified user geographic position data to obtain region information corresponding to each longitude and latitude, wherein the region information comprises city and province information.
Since each province has a fixed latitude and longitude data range, the latitude and longitude data of the province can be stored in a server for analysis in advance, and the position analysis of the province can be completed according to the latitude and longitude by calling the data, so that the province to which the latitude and longitude in the geographic position data of the user belongs is analyzed through the latitude and longitude data of the address fence of the province when the S1103 is analyzed.
S120, clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster;
the preset clustering algorithm in this embodiment is a DBSCAN clustering algorithm. DBSCAN (Density-Based spatial clustering of Applications with Noise, Density-Based clustering method) is a Density-Based spatial clustering algorithm. The algorithm divides the area with sufficient density into clusters and finds arbitrarily shaped clusters in a spatial database with noise, which defines clusters as the largest set of density-connected points.
S120, grouping according to provincial and hour dimensions during specific calculation, clustering by using a DBSCAN algorithm with the hour as the dimension according to an active radius, wherein the active radius is the provincial region, clustering by using the DBSCAN algorithm to obtain a plurality of aggregation clusters, each aggregation cluster comprises a plurality of users, and each aggregation cluster represents a common place where the users in the aggregation cluster go. The output parameters comprise information such as longitude and latitude of the central point, the number of people, the maximum radius of the cluster and the like. In this embodiment, algorithm parameters are also optimized so as to obtain more accurate user address output data, specifically, when the number of times of occurrence of the same longitude and latitude in a group is larger, the weighting coefficient of the longitude and latitude is higher, the embodiment does not limit a specific tuning algorithm, and as long as an algorithm with an automatically adjusted weighting coefficient is used for algorithm tuning, for example, the weighting coefficient sample _ weight. The DBSCAN clustering algorithm mode in this embodiment is "ball _ tree", and the mode divides data on a series of nested hyper-spheres, and measures and selects "haversine".
S130, forming a relationship pair by the users in each first aggregation cluster through a Cn combination function;
the Cn combination function of S130 is a permutation combination function, in this embodiment, all users are arranged into pairwise relationship pairs, of course, according to actual requirements, the number of users is not limited to pairwise relationship pairs, for example, when there are many users, a relationship pair with three users as a group may also be used. The specific steps of the pairwise relationship pairs in this embodiment are:
sequencing the users in each first aggregation cluster according to a characteristic value, wherein the characteristic value comprises one of a mobile phone number, an identity card number and a user ID;
and splitting all the users into pairwise relation pairs through a Cn combination function.
The sorting according to the eigenvalues is to ensure that the relationship pairs are not repeated, because A-B and B-A are two identical users, the eigenvalue sorting can prevent the two identical relationship pairs from being obtained at the same time, and double data redundancy and feature calculation amount are avoided.
S140, clustering the geographical position data to be analyzed according to the relation pair through a preset clustering algorithm to obtain a second clustering;
and S140, using the relation pair obtained in S130 as a user dimension, and using DBSCAN clustering to obtain a plurality of aggregation clusters, wherein each aggregation cluster represents a common frequently-visited address between the relation pairs. The clustering process is the same as S120, but when clustering is performed in S140, clustering is performed by taking the relation pair as a dimension, the active radius is an urban area, and the output parameters comprise information such as longitude and latitude of a central point, time, and the maximum radius of the cluster.
S150, calculating derivative characteristics according to the relation pairs and the second clustering;
the derived features include geographical proximity strength, geographical proximity stability.
Since the data obtained in S130 and S140 only have the common place of two users, and the intimacy degree calculation in this embodiment requires derived feature information including the proximity strength and proximity stability of the geographic location, it is necessary to re-process and calculate the basic features obtained in S130 and S140 to obtain the derived feature information.
The geographical proximity strength calculation formula is as follows:
wherein the FREAb-geo-cnt represents the number of hours of geographic proximity of the a subscriber and the b subscriber; AVGall-geo-cnt represents the average number of hours of a user and all other geographically proximate users; the FREab-geo-addr represents the number of the geographic position adjacent addresses of a and b; AVGall-geo-addr represents the average number of addresses of a user and all its geographically close users.
The geographical proximity stability calculation formula is as follows:
wherein, FREab-geo-week represents the adjacent weeks of the geographic positions of the a user and the b user; AVGall-geo-week represents the average number of weeks of a user and all its geographically close users; CVab-geo-week represents the discrete coefficient of the adjacent interval weeks of the geographic positions of the a user and the b user; avgcval-geo-week represents the dispersion factor for the average number of weeks apart between a user and all other geographically proximate users.
The above-mentioned a user and b user are two users in a pair of user relationship pairs. The discrete coefficients referred to herein, i.e., the ratio of the standard deviation to the average, take the discrete coefficients of the adjacent interval weeks of the geographic locations of the user a and the user b as an example, calculate the standard deviation according to the adjacent interval weeks of each geographic location as input data, and then obtain the discrete coefficients according to the standard deviation.
And S160, calculating the user intimacy score according to the derived features.
The user intimacy calculation method satisfies the formula: (coefficient x location proximity strength + (1-coefficient) x location proximity stability) x user weight, the coefficient being an adjustment coefficient, the user weight being calculated as: lg (Nmax/N (a)), Nmax is the maximum number of users adjacent to the geographical position, N (a) is the number of users adjacent to the geographical position a, and a is one of the users.
The adjustment coefficient is used for adjusting the influence of the geographical proximity strength and the geographical proximity stability on the user intimacy degree calculation result, and the higher the adjustment coefficient is, the higher the geographical proximity strength ratio is, the lower the adjustment coefficient is, and the higher the geographical proximity stability ratio is. The adjustment coefficient needs to be set according to actual conditions.
The formula for the user affinity calculation in combination with the derived features of S150 can be expressed as:
sab of the above formula is the user affinity score.
In actual calculation, the intimacy degree score is too high due to the abnormal value of the partial derivative characteristic value, so that the upper limit of the score is ensured by setting a preset threshold, and when the user intimacy degree score exceeds the preset threshold, the preset threshold is used as the user intimacy degree score.
Example two
The second embodiment discloses a device corresponding to the user affinity calculation method in the second embodiment, which is a virtual device structure in the first embodiment, and as shown in fig. 3, the device includes:
the receiving module 210 is configured to receive user geographical location data within a preset time period, and preprocess the user geographical location data to obtain geographical location data to be analyzed;
the clustering module 220 is configured to cluster the geographic position data to be analyzed according to a time dimension and a region by using a preset clustering algorithm to obtain a first cluster; forming a relationship pair by the users in each first aggregation cluster through a Cn combination function; clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
a feature calculating module 230, configured to calculate derived features according to the relationship pairs and the second clustering;
and the intimacy degree calculating module 240 calculates the user intimacy degree score according to the derivative characteristics.
EXAMPLE III
Fig. 4 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention, as shown in fig. 4, the electronic device includes a processor 310, a memory 320, an input device 330, and an output device 340; the number of the processors 310 in the computer device may be one or more, and one processor 310 is taken as an example in fig. 4; the processor 310, the memory 320, the input device 330 and the output device 340 in the electronic apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 4.
The memory 320 may be used as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the user intimacy degree calculation method in the embodiment of the present invention (for example, the receiving module 210, the clustering module 220, the feature calculation module 230, and the intimacy degree calculation module 240 in the user intimacy degree calculation method apparatus). The processor 310 executes various functional applications and data processing of the electronic device by executing the software programs, instructions and modules stored in the memory 320, so as to implement the user affinity calculation method of the first embodiment.
The memory 320 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 320 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 320 may further include memory located remotely from the processor 310, which may be connected to the electronic device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 330 may be used to receive input of user identity information, geographic location data, and the like. The output device 340 may include a display device such as a display screen.
Example four
The seventh embodiment of the present invention further provides a storage medium containing computer-executable instructions, where the storage medium may be used for a computer to execute a user intimacy degree calculation method, and the method includes:
receiving user geographical position data in a preset time period, and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster;
forming a relationship pair by the users in each first aggregation cluster through a Cn combination function;
clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
calculating derivative features according to the relationship pairs and the second clustering;
and calculating a user affinity score according to the derived features.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the user affinity-based calculation method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes instructions for enabling an electronic device (which may be a mobile phone, a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the method and apparatus for calculating user affinity, the units and modules included in the embodiment are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. A user intimacy calculation method is characterized by comprising the following steps:
receiving user geographical position data in a preset time period, and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster;
forming a relationship pair by the users in each first aggregation cluster through a Cn combination function;
clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
calculating derivative features according to the relationship pairs and the second clustering;
and calculating a user affinity score according to the derived features.
2. The method of claim 1, wherein the user geographic location data is location data for an LBS location service.
3. The method of calculating user intimacy degree according to claim 1, wherein preprocessing the user geographical location data comprises the steps of:
carrying out format verification on the user geographic position data, and deleting data which does not meet the format requirement;
carrying out numerical value verification on the user geographic position data, and deleting data which do not conform to a preset numerical value interval;
and analyzing the longitude and latitude of the verified user geographical position data to obtain region information corresponding to each longitude and latitude, wherein the region information comprises city and province information.
4. The method according to claim 1, wherein the predetermined clustering algorithm is a DBSCAN clustering algorithm, and the predetermined clustering algorithm is adjusted in weight by a predetermined parameter tuning algorithm.
5. The method of calculating user intimacy degree according to claim 1, wherein the grouping of the users in each of the first cluster clusters into relationship pairs by a Cn combining function, comprises the steps of:
sequencing the users in each first aggregation cluster according to a characteristic value, wherein the characteristic value comprises one of a mobile phone number, an identity card number and a user ID;
and splitting all the users into pairwise relation pairs through a Cn combination function.
6. The method of claim 1, wherein the derived features include geographic proximity strength, geographic proximity stability, and the user affinity calculation method satisfies the formula: (coefficient x location proximity strength + (1-coefficient) x location proximity stability) x user weight, the coefficient being an adjustment coefficient, the user weight being calculated as: lg (Nmax/N (a)), Nmax is the maximum number of users adjacent to the geographical position, N (a) is the number of users adjacent to the geographical position a, and a is one of the users.
7. The user affinity calculation method according to any one of claims 1 to 6, wherein calculating a user affinity score based on the derived features comprises the steps of:
and when the user intimacy degree score exceeds a preset threshold value, taking the preset threshold value as the user intimacy degree score.
8. A user intimacy degree calculation apparatus, characterized by comprising:
the receiving module is used for receiving the user geographical position data in a preset time period and preprocessing the user geographical position data to obtain geographical position data to be analyzed;
the clustering module is used for clustering the geographical position data to be analyzed according to time dimension and region through a preset clustering algorithm to obtain a first clustering cluster; forming a relationship pair by the users in each first aggregation cluster through a Cn combination function; clustering the geographical position data to be analyzed through a preset clustering algorithm according to the relation pair to obtain a second clustering;
a feature calculation module for calculating derived features according to the relationship pairs and the second clusters;
and the intimacy degree calculating module is used for calculating the intimacy degree score of the user according to the derived characteristics.
9. An electronic device comprising a processor, a storage medium, and a computer program, the computer program being stored in the storage medium, wherein the computer program, when executed by the processor, implements the user intimacy degree calculation method according to any one of claims 1 to 7.
10. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the user affinity calculation method according to any one of claims 1 to 7.
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| CN114064976A (en) * | 2021-10-20 | 2022-02-18 | 同盾科技有限公司 | Data feature calculation method, system, electronic device and storage medium |
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